@Override public MasterKey getContainerTokenMasterKey() { NodeHeartbeatResponseProtoOrBuilder p = viaProto ? proto : builder; if (this.containerTokenMasterKey != null) { return this.containerTokenMasterKey; } if (!p.hasContainerTokenMasterKey()) { return null; } this.containerTokenMasterKey = convertFromProtoFormat(p.getContainerTokenMasterKey()); return this.containerTokenMasterKey; }